Multiphase Bidirectional DC-DC Converter with Phase shedding for BLDC Driven Electric Vehicle

Electric Vehicles are seeking more attention in recent days due to pollution concerns and fear of exhausting petroleum products. In battery powered electric vehicle the use of bidirectional converters would support charging of battery during regenerative braking. Use of multiphase converters offer several advantages such as reduced ripple and reduced passive components size and avoid local hotspot creation and improve system efficiency. However, all the phases in multiphase converters would not be required to operate all the time. Hence this paper focuses on operating the number of phases adaptive to load current. Analysis of interleaved soft switching boost converter to minimize the switching losses is also presented. The BLDC motor is considered as a load which makes it a usual choice because of its various advantages.